Android编程实现计算两个日期之间天数并打印所有日期的方法

/*** 计算两个日期之间的日期* @param startTime* @param endTime*/private void betweenDays(long startTime,long endTime,long mills_select,int code){   Date date_start=new Date(startTime);   Date date_end=new Date(endTime);   //计算日期从开始时间于结束时间的0时计算   Calendar fromCalendar = Calendar.getInstance();   fromCalendar.setTime(date_start);   fromCalendar.set(Calendar.HOUR_OF_DAY, 0);   fromCalendar.set(Calendar.MINUTE, 0);   fromCalendar.set(Calendar.SECOND, 0);   fromCalendar.set(Calendar.MILLISECOND, 0);   Calendar toCalendar = Calendar.getInstance();   toCalendar.setTime(date_end);   toCalendar.set(Calendar.HOUR_OF_DAY, 0);   toCalendar.set(Calendar.MINUTE, 0);   toCalendar.set(Calendar.SECOND, 0);   toCalendar.set(Calendar.MILLISECOND, 0);   int s = (int) ((toCalendar.getTimeInMillis() - fromCalendar.getTimeInMillis())/ (ONE_DAY_MS));   if(s>0){     for(int i = 0;i<=s;i++){       long todayDate = fromCalendar.getTimeInMillis() + i * ONE_DAY_MS;       /**        * yyyy-MM-dd E :2012-09-01        */       Log.i("打印日期",Utils.getCustonFormatTime(todayDate,"yyyy-MM-dd"));     }   }else {//此时在同一天之内       Log.i("打印日期",Utils.getCustonFormatTime(startTime,"yyyy-MM-dd"));   }}

/*** 格式化传入的时间** @param time   需要格式化的时间* @param formatStr 格式化的格式* @return*/public static String getCustonFormatTime(long time, String formatStr) {    SimpleDateFormat format = new SimpleDateFormat(formatStr);    Date d1 = new Date(time);    return format.format(d1);}